Chapter 6 Notes, part II
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Transcript of Chapter 6 Notes, part II
Chapter 6 Notes, Chapter 6 Notes, part IIpart II
Naming Ionic Naming Ionic CompoundsCompounds
Naming Ionic Naming Ionic CCompoundsompounds
For naming an ionic compound,1) Name the metal.
EX: BaBrEX: BaBr22
Barium
Naming Ionic Naming Ionic CCompoundsompounds
For naming an ionic compound, 2) Write the name of the non-
metal, and change the end to –ide.
Barium brom ine ide
EX: BaBrEX: BaBr22
Naming Ionic Naming Ionic CCompoundsompounds
If there is a polyatomic anion, then you do not change the ending: EX: Ca(NOEX: Ca(NO33))22
Calcium nitrate
Name these:
Na2O
MgCl2Na2CO3
Name these:
Na2O sodium oxide
MgCl2 Magnesium chloride
Na2CO3 sodium carbonate
Naming Ionic Naming Ionic CCompoundsompounds3)3)If a positive ion (a metal) can If a positive ion (a metal) can
have more than one oxidation have more than one oxidation number, you have to designate number, you have to designate its charge in the name!its charge in the name!
We do this by putting the charge We do this by putting the charge as a roman numeral in as a roman numeral in parenthesis between the parenthesis between the positive positive and negative and negative
ion.ion.
Naming Ionic Naming Ionic CCompoundsompoundsWhy do we need to do that?
Name: Fe2O3
FeO
These both exist in nature, so we have to show which one we mean.
Naming Ionic Naming Ionic CCompoundsompounds
Fe2O3Name it:
Iron ox ygen ide ( ) III
-2
If this is true, then what was iron to begin with?
+3 Reverse criss cross to find the charge of
the iron:
Reverse criss cross to find the charge of
the iron:
Naming Ionic Naming Ionic CCompoundsompounds
Fe OName it:
Iron ox ygen ide ( ) II
-1
If this is not true, the numbers must have been reduced.
+2 -2
Naming Ionic Naming Ionic CCompoundsompoundsMetals that don’t need parentheses:Group I, II and IIIAZn, Cd (always +2) Ag (always +1)
Which means transition, inner transition and other metals do need a paranthesis!
Tin and Lead
• Tin and Lead do need a roman numeral because they have more than one oxidation number.
• Sn(II) and Sn(IV)• Pb(II) and Pb(IV)
Naming Ionic Naming Ionic CCompoundsompoundsFinal flowchart of how to name:
Name the positive ion.
Does it need a roman numeral?
If so, reverse criss cross, if not, ignore.
Name the negative ion and:
If a nonmetal end in -ide; if it is a polyatomic ion, name the polyatomic.
Name these:
Na2S
CuCl2K2SO4
Pb(NO3)4
Name these:
Na2S sodium sulfide
CuCl2 copper(II)chloride
K2SO4 potassium sulfate
Pb(NO3)4 lead(IV)nitrate